面向可能性数据库的异构双极信息查询策略研究  

Study on Query of Heterogeneous Bipolarity Information in Possibilistic Databases

作　　者：赵法信[1] 马宗民[2] 

机构地区：[1]湛江师范学院智能信息处理研究所,广东湛江524048 [2]东北大学信息科学与工程学院,沈阳110819

出　　处：《小型微型计算机系统》2013年第6期1354-1358,共5页Journal of Chinese Computer Systems

基　　金：广东省自然科学基金项目(S2012010010438)资助;国家自然科学基金项目(60873010)资助

摘　　要：在日常交流中,人们常常会对同一事物同时使用正面的描述和负面的描述来表达其愿望和不满,由于不要求正、负面的描述必须相互对称,此类信息因而被称为异构双极(Heterogeneous bipolarity)信息.传统信息系统中的模糊查询方法,不能很好地处理用户查询需求中所含有的异构双极信息.本文基于可能性数据库,在限定的条件下,以在模糊查询选择操作的基本查询条件中,能够处理异构双极信息为目标,将Vague集用于异构双极信息的建模,并给出了在基本查询条件中含有异构双极信息的情况下,查询结果相关可能性测度和必要性测度的计算公式,同时还通过实例讨论了该方法的语义、特点及其与基于可能性理论方法的一致性.In daily communication, people often give both positive and negative information to state what they desire and what they re- ject for the same things. Because positive and negative statements do not necessarily mirror each other, this results in so-called hetero- geneous bipolar information. The fuzzy query in traditional information systems do not adequately support the handling of heterogene- ous bipolar information. In this paper, under constrained conditions, how heterogeneous bipolar information which represented by vague set be dealt with in the formulation and evaluation of selection conditions in fuzzy querying within a possibilistic database is presented. The semantics and characteristic of the approach is given, and how the approach is in line with the regular possibilistic ap- proach is also discussed.

关 键 词：可能性数据库 异构双极信息 VAGUE集 数据库查询 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]